Apache Pig

Pig is a dataflow programming environment for processing very large files. Pig's
language is called Pig Latin. A Pig Latin program consists of a directed
acyclic graph where each node represents an operation that transforms data.
Operations are of two flavors: (1) relational-algebra style operations such as
join, filter, project; (2) functional-programming style operators such as map,
reduce.

Pig compiles these dataflow programs into (sequences of) map-reduce or Apache Tez
jobs and executes them using Hadoop. It is also possible to execute Pig Latin
programs in a "local" mode (without Hadoop cluster), in which case all
processing takes place in a single local JVM.

General Info

For the latest information about Pig, please visit our website at:

http://pig.apache.org/

and our wiki, at:

http://wiki.apache.org/pig/

Getting Started

1. To learn about Pig, try http://wiki.apache.org/pig/PigTutorial
2. To build and run Pig, try http://wiki.apache.org/pig/BuildPig and
   http://wiki.apache.org/pig/RunPig
3. To check out the function library, try http://wiki.apache.org/pig/PiggyBank

Contributing to the Project

We welcome all contributions. For the details, please, visit
https://cwiki.apache.org/confluence/display/PIG/HowToContribute